Building block



Dec. 13, 1927.

1,652,743 K. 1.. SMITH BUILDING BLOCK Filed Sept. 5, 1926 INVENTOR A'EN/Vffh L J/f H ATTORNEY}- Patented Dec. 13, 1927.

UNITED STATES KENNETH L. SMITH, LANSING, MICHIGAN.

BUILDING BLOCK.

Application filed September 3, 1926.

The main object of this invention is to i provide an improved building block which when laid in a wall provides a plurality of air chambers, the air chambers continuing through the joint between the blocks.

A further object is to provide an improved building block with interlocking members coacting with the blocks disposed end to end thereto and also with the blocks at the top and bottom.

Objects pertaining to details and economies of my improved building block will definitely appear from the detailed description to follow. The invention is clearly defined and pointed out in the claims.

A block embodying the features of my invention is clearly illustrated in the accompanying drawing forming a part of this application, in which:

Fig. 1 is a fragmentary perspective view of a wall formed of blocks embodying the features of my invention.

Fig. 2 is a perspective view of one of my blocks.

Fig. 3 is a perspective view of my improvements as embodied or adapted for corner blocks.

Fig. 4 is a plan view of a section of wall, the illustration comprising a corner block and an adjacent coacting block.

In the embodiment shown in Fig. 2 my improved building block comprises side longitudinal walls 1, 1 and intermediate walls 2 connected by cross walls 3, the walls being integrally molded. The cross walls are spaced to provide a plurality of vertical chambers at and are preferably arranged in staggered relation as shown.

The end crosswalls are arranged in spaced relation to the ends of the longitudinal walls providing end recesses 5 which, when the blocks are laid in a wall, complement corresponding recesses 5 on the. ends of the adjacent blocks, forming vertical air spaces corresponding to the spaces 4.

The outer longitudinal walls have internal vertical rabbets 6 at one end and external vertical rabbets 7 at the other end providing coacting lap joint members. The inwardl facing walls of the rabbets 6 are downwar ly converged while the outwardly facing walls of the rabbets 7 are correspondingly converged to fit with a wedging action when the vblocks are assembled by a downward movement with their joint members in coacting relation,

Serial No. 133,425.

My improved blocks are provided with external shoulders 8 along their upper longitudinal edges, the inner walls 9 being inwardly inclined. The lower longitudinal edges have inwardly facing shoulders 10 with their walls 11 inclined to correspond with the inclined wall 9. This forms a tongue and groove engagement for the blocks when assembled in a wall.

I have, in the accompanying drawing, illustrated mortar 12 between the blocks, the thickness of this being considerably exaggerated for convenience in illustration, it being the intent that there shall be a coacting joint engagement between the various shouldered or rabbeted parts. A thin cement is all that is required unless the mortar is for ornamental purposes.

The corner block 13 is substantially the same as the blocks described with the exception that the projecting joint walls 14 and 15 are disposed laterally, the same being conformed, however, to coact with the blocks 1 when laid into a wall.

Having thus described my invention what I claim as new and desire to secure by Leters Patent, is:

l. A building block comprising longitudinal walls and end cross walls spaced from the ends of the longitudinal walls and vertically shouldered to provide coacting overlapping joint members, the inwardly facing walls of the rabbets being downwardly converged, the block having external shoulders along its top longitudinal edges and corresponding internal shoulders along its bottom longitudinal edges.

2. A building block comprising longitudinal walls and end cross walls spaced-from the ends of the longitudinal walls and vertically shouldered to provide coacting overlapping joint members, the inwardly facing walls of the rabbets being downwardly convergeda 3. A building block comprising longitudinal walls and end cross walls spaced from the ends of the longitudinal walls and vertically shouldered to provide coacting overlapping oint members, the block having external shoulders along its top longitudinal edges and corresponding internal shoulders along its bottom longitudinal edges.

In witness whereof I have hereunto set my hand.

KENNETH L SMITH- 

